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Equipment and method for producing d-alpha-tocopheryl acetate

A technology of tocopherol acetate and equipment, applied in the field of producing d-α-tocopherol acetate, can solve problems such as harm to workers' health, high energy consumption, blockage of discharge ports, etc. The effect of protecting the health of workers

Active Publication Date: 2015-07-01
COFCO NUTRITION & HEALTH RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] For this reason, the technical problem to be solved by the present invention is to overcome the large energy consumption of the production equipment for preparing d-alpha-tocopheryl acetate in the prior art, the zinc powder is easy to cause the blockage of the discharge port during the filtering operation, and the , the problem that acetic anhydride harms the health of workers, thereby providing a d-alpha-tocopheryl acetate production equipment that consumes less energy, does not block the outlet with zinc powder, and does not harm the health of workers when acetic anhydride is fed into the reaction operation

Method used

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  • Equipment and method for producing d-alpha-tocopheryl acetate
  • Equipment and method for producing d-alpha-tocopheryl acetate
  • Equipment and method for producing d-alpha-tocopheryl acetate

Examples

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Embodiment 1

[0058] Such as figure 1 As shown, this embodiment provides a kind of equipment for producing d-alpha-tocopherol acetate, including a reactor 1 and an agitator 2 arranged in the reactor 1. In this embodiment, the reactor 1 is a batch type Reactor. In the reactor 1, the stirrer 2 stirs therein, so that the materials in the reactor 1 are mixed and heat transfered uniformly. In this embodiment, the equipment for producing d-α-tocopherol acetate also includes a box structure 3 arranged below the liquid level of the reaction solution in the reactor 1 and used for filling zinc powder. The body structure 3 is formed with a number of through holes with a diameter not larger than the minimum particle diameter of the zinc powder. Through the setting of the box structure 3, when feeding operation in the reactor 1, the zinc powder can be added first, and then acetic anhydride is added through the liquid feeding port on the reactor 1, thereby avoiding the Workers are exposed to acetic an...

Embodiment 2

[0073] This embodiment provides a kind of equipment for producing d-alpha-tocopherol acetate, as a kind of alternative mode of the box structure described in embodiment 1, in this embodiment, such as Figure 5 and Figure 6 As shown, the box structure is a split structure. Specifically, in this embodiment, the box structure is a ring-shaped arrangement of four 1 / 4 ring structures, wherein the upper width of the box structure L=100mm, lower width L=80mm, the first through hole formed on the surface of the outer support layer 32 is a triangular hole with a side length of 8mm, and the material of the lining 33 is SS316L (316 stainless steel, international new brand 06Cr17Ni12Mo2), the said The through-holes formed on the surface of the inner liner 33 are circular holes, the diameter of the through-holes of the inner liner 33 is 300 mesh, the particle size of the zinc powder is 250 mesh, and the filling amount of the zinc powder is 14 days.

Embodiment 3

[0075] This embodiment provides a kind of equipment for producing d-alpha-tocopherol acetate, as a kind of alternative mode of the box structure described in embodiment 1, in this embodiment, such as Figure 7 and Figure 8 As shown, the box is a split structure, specifically, the box structure is four wedge-shaped structures arranged in a ring, wherein the upper width L=150mm of the box structure, and the lower width L=120mm , the first through-hole formed on the surface of the outer support layer 32 is a square hole with a side length of 5mm, the material of the inner lining 33 is polyvinyl chloride, and the through-hole formed on the surface of the inner lining 33 is square, The diameter of the through holes formed on the surface of the inner liner 33 is 400 mesh, and the particle diameter of the zinc powder is 300 mesh. In this embodiment, the filling amount of the zinc powder is 30 days, and the box structure 3 is fixed on the stirring shaft through a supporting structur...

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Abstract

The invention discloses equipment and a method for producing d-alpha-tocopheryl acetate. The equipment comprises a reactor, a stirrer and a box structure, wherein the reactor is used for holding a reaction solution; the stirrer is arranged in the reactor; the box structure is arranged below the liquid level of the reaction solution in the reactor and used for filling zinc powder; and a plurality of through holes, the bore diameters of which are not greater than the smallest particle size of the zinc powder, are formed in the box structure. Through the design of the box structure, the zinc powder can be firstly added during the charging for reaction, and then acetic anhydride is added through a liquid feeding port in the reactor, so that the workers are prevented from contacting the acetic anhydride gas and the health of the workers is protected; moreover, through the box structure, one-time filling of the zinc powder is enough for the consumption of the zinc powder, so that the operation of adding the zinc powder every day is avoided and the complexity degree of the operation of the workers is decreased; furthermore, the bore diameter of the through holes formed in the box structure is not greater than the smallest particle size of the zinc powder, so that the zinc powder is prevented from entering the solution outside the box structure and the possibility that the zinc powder blocks the discharging port of the reactor is avoided.

Description

technical field [0001] The invention relates to a device and method for producing d-alpha-tocopherol acetate. Background technique [0002] d-α-tocopherol acetate is a natural vitamin E derivative with relatively stable chemical properties, which is esterified from natural d-α-tocopherol (α-tocopherol) and acetic anhydride. d-α-tocopherol acetate passes through the human body Or animals can decompose α-tocopherol beneficial to human or animal body after digestion and absorption. d-α-tocopheryl acetate is widely used, mainly in food and feed additives, cosmetics, medicine and other fields. [0003] At present, the industrialized production of d-α-tocopherol acetate is generally prepared by batch-tank esterification of d-α-tocopherol and acetic anhydride in a reactor in the presence of zinc powder. Among them, the role of zinc powder has two points: one is that zinc powder further reacts with the acetic acid generated by the esterification reaction of d-alpha-tocopherol and ...

Claims

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Application Information

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IPC IPC(8): B01J19/18C07D311/72
Inventor 徐光辉杜伟彦陈学兵倪少利周学晋许克家高尚林旭琦林海龙
Owner COFCO NUTRITION & HEALTH RES INST
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